Portable electronic device and camera module with rotatable reflection module
A camera module includes a housing, a rotation holder including a reflection member, and supported on an inner wall of the housing such that the reflection member is rotatable about a first axis, perpendicular to an optical axis and parallel to a bottom of the housing, a magnet provided on a side surface of the rotation holder, parallel to an optical axis direction, and a first position detection sensor provided in the housing to face the magnet and configured to sense movement of the rotation holder in a second axis direction, perpendicular to the optical axis and the first axis, wherein the magnet is disposed to be biased in a direction, opposite to the inner wall of the housing on which the rotation holder is supported in the optical axis direction.
1. A camera module comprising:
a housing;
a rotation holder comprising a reflection member, and supported on an inner wall of the housing, wherein the reflection member is rotatable about a first axis, perpendicular to an optical axis and parallel to a bottom of the housing, and is rotatable about a second axis perpendicular to the optical axis and the first axis;
a sensing magnet disposed on the rotation holder;
a plurality of driving magnets disposed on the rotation holder, wherein the plurality of driving magnets comprise a first driving magnet, configured to provide a driving force to move the rotation holder in the first axis direction, and a second driving magnet, configured to provide a driving force to move the rotation holder in the second axis direction; and
a first position detection sensor disposed in the housing to face the sensing magnet and configured to sense movement of the rotation holder in the second axis direction,
wherein the sensing magnet is disposed to be parallel to the second driving magnet.
2. The camera module according to claim 1 , wherein the first position detection sensor is disposed to be biased in a direction, opposite to the inner wall of the housing, from a center of the sensing magnet in the optical axis direction.
3. The camera module according to claim 1 , wherein the sensing magnet is a two-pole magnet magnetized with two poles, and of which an N pole and an S pole are sequentially arranged in the second axis direction in which the rotation holder is configured to move.
4. The camera module according to claim 3 , wherein the first position detection sensor is disposed to face an intermediate region in which the N pole and the S pole of the sensing magnet meet, when the rotation holder is not driven.
5. The camera module according to claim 3 , wherein the sensing magnet is provided with a neutral zone between the N pole and the S pole, and
wherein a center of the neutral zone is disposed to face a center of the first position detection sensor, when the rotation holder is not driven.
6. The camera module according to claim 1 , wherein the first position detection sensor is disposed to be parallel to a driving coil configured to provide driving force to the movement of the rotation holder in the first axis direction.
7. The camera module according to claim 1 , further comprising a second position detection sensor configured to sense the movement of the rotation holder in the first axis direction.
8. The camera module according to claim 7 , wherein the second position detection sensor is disposed to be parallel to a driving coil configured to provide driving force rotating the rotation holder about the first axis.
9. The camera module according to claim 7 , wherein the second position detection sensor is configured to detect a change in a position of the first driving magnet providing driving force moving the rotation holder in the first axis direction.
10. A portable electronic device, comprising:
the camera module of claim 1 further comprising a lens module configured to refract light reflected from the reflection member, and an image sensor configured to convert the refracted light into an electrical signal to capture an image.
11. A camera module comprising:
a housing;
a rotation holder comprising a reflection member, and supported on an inner wall of the housing, wherein the reflection member is movable along a first axis, perpendicular to an optical axis and parallel to a bottom of the housing, and in a second axis direction, perpendicular to the optical axis and the first axis;
a plurality of driving magnets disposed on the rotation holder, wherein the plurality of driving magnets comprise a first driving magnet, configured to provide a driving force to move the rotation holder in the first axis direction, and a second driving magnet, configured to provide a driving force to move the rotation holder in the second axis direction;
a sensing magnet disposed on a side surface of the rotation holder, parallel to the second driving magnet; and
a position detection sensor, disposed in the housing, and configured to detect a change in position of the sensing magnet and the second driving magnet, to sense the movement of the rotation holder in the second axis direction.
12. The camera module according to claim 11 , wherein the sensing magnet is disposed to be biased in a direction, opposite to the inner wall of the housing on which the rotation holder is supported, in the optical axis direction.
13. The camera module according to claim 11 , wherein the position detection sensor is disposed to be further biased in a direction, opposite to the inner wall of the housing, from a center of the sensing magnet in the optical axis direction.
14. The camera module according to claim 11 , wherein the second driving magnet and the sensing magnet are arranged such that an N pole and an S pole are sequentially formed in the second axis direction in which the rotation holder is moving.
15. The camera module according to claim 14 , wherein
the position detection sensor is disposed to face a boundary between the second driving magnet and the sensing magnet.
16. The camera module of claim 15 , wherein the second driving magnet and the sensing magnet are disposed to be spaced apart from each other.
17. The camera module according to claim 14 , wherein the second driving magnet is a two-pole magnet magnetized such that the N pole and the S pole are sequentially formed in the optical axis direction,
wherein the sensing magnet is disposed adjacent to the N pole or the S pole of the second driving magnet, and
wherein the sensing magnet adjacent to the second driving magnet is disposed adjacent to polarity, different from polarity of the second driving magnet.
18. The camera module according to claim 17 , wherein the second driving magnet and the sensing magnet are disposed to contact each other.
19. A portable electronic device, comprising:
the camera module of claim 11 further comprising a lens module configured to refract light reflected from the reflection member, and an image sensor configured to convert the refracted light into an electrical signal to capture an image.